Sirup-filter



U ITED STATES PATENT OFFICE OMAR II. J EIVELL AND NVILLIAM M. JEIVELL,OF CHICAGO, ILLINOIS.

SIRUP-FILTER.

SPECIFICATION forming part of Letters Patent No. 435,971, datedSeptember 9, 1890.

Application filed May 28, 1890. Serial No. 353,499. (No model.)

To all whom it may concern.-

Be it known that we, OMAR H. J EWELL and WILLIAM M. J EWELL, citizens ofthe United States of America, residing at Chicago, in the county of Cookand State of Illinois, have invented certain new anduseful Improvementsin sirup-Filters, of which the following is a specification, referencebeing had therein to the accompanying drawings.

This our invention has for its object to provide an apparatus forfiltering sirups; and with that object in view our invention consists ofthe novel devices and combinations of devices hereinafter described andspecifically claimed.

In the accompanying drawings, Figure 1 represents a vertical sectionthrough the center of the apparatus, and Fig. 2 a sectional plan of thesame.

Corresponding letters of reference in both figures of the drawingsdesignate like parts.

The tank we use for our purpose is open on top, and it is composed of aniron cylindrical shell A, secured with its bottom edge in the exteriorflange a of a ring-shaped casting B, providing an inwardly-slantingannular surface with an interior downwardly-extended cylindrical flangeb, and with an outward flange c to the lower edge thereof.

In the ring-shaped casting B is secured the casting C, provided with acylindrical flange d, entering the flange b of casting B, and having anexterior flange secured by bolts against flange c of casting B. Theupper surfaces of both castings B and C thus connected form the concavedbottom of the tank, which bottom in its middle is conically recessedand, provided with a central hole and with a gland f fitted therein andsecured with its flange against the under side of casting C bytapscrews.

Between the surfaces of flanges Z) and d is secured the lower end of acylindrical shellD of perforated sheet metal, having secured in pipes11', j, and 70', the pipe t" being the dis.

charge-pipe for the filtered sirup, the pipe 7" for admitting hot water,and the pipe 7c for admitting steam into the filter.

Over the upper end of gland f, extending through the bottom C, issleeved the lower end of a pipe G, the upper end of which is securedupon the lower end of a spindle H, passed through the central eye of thehub of spider E, and having mounted upon its upper end a wheel Z. Aspiral spring m is placed over spindle II between pipe G and the centralhub of spider E, which tends to prevent th lower end of pipe G fromdisengaging the gland f. The pipe G has a series of upwardly-inclinedbosses with tapped holes that communicate with the exterior of such pipefor securing the screw-threaded necks of strainercups I, each beingcovered with a woven wire or perforated metal plate.

Through holes in pipe G are passed and secured therein aseries of radialbars J, that will be rotated with such pipe by turning hand-wheel Z.

K is the feed-pipe having stop or regulating valve 41, and connectingwith a suitable valve 0, controlled by a lever and float L, and M is adischarge-pipe tapped through the ringcastingB to communicate withannular chamber F, and this pipe M is provided with a stopvalve 19. Asteam-pipe N entering from the top extends downward inside of perforatedcylindrical shell D and close to the wall thereof in form of a coil,which pipe near the bottom C is passed through such shell D, and thencein form of a coil near the inside surface of shell A extends upwardagain, finally discharging over the upper edge of tank A. Thisfiltering-tank is supported on legs P, securedv to bottom casting B.

The modus operandi is as follows, to wit: The inner shell D being filledwith crushed quartz or coarse sand or fine gravel to aboutthree-quarters its height, and the valves j, is, and 19 being closed andthe valve 'b' opened, the apparatus is filled with sirup to a line thefloat-controlled valve 0 will permit, whereby the annular chamber F, aswell as the space over the filtering material, will be occupied by thesirup. Steam circulated through pipe N will warm the sirup to render ithighly fluid, and will also warm the filtering material, so that the Simp will notbe chilled while filtering through the same from the top, aswell as through the perforations of shell D. The purified sirup willpass off through strainer-cups I into pipe G, and thence through pipegand valvet' into pipe t',tl1at will conduct it to the intendedreceptacle. All impurities thus separated must be washed out from timeto time, which is accomplished by closin g valves 02 and i and byopening valves j, k, and p. Through valve 7' hot water is admitted andthrough valve 76 steam is admitted into pipe G, which, passing throughstrainers I and through the filtering material in a reversed direction,will escape through the perforations of shell D into the annular chamberF, thence will be carried off through pipe M, thereby dissolving allimpurities to be carried off with the hot water, and for the purpose offacilitating the Washing of the filtering material by the steam andwater thus passed through it the hand-wheel Z is turned during thiswashing process, whereby the arms J will be rotated through suchfiltering material, thereby stirring and agitating the same and rubbingthe particles composing it against each other for liberating impuritiesadhering thereto to pass off with the water.

\Vhat we claim is 1. In a filtering-tank for the purpose described, thecombination of a perforated shell holding the filtering material, of avertical pipe extended into the filtering material and provided withstrainer-cups and connecting with a discharge-pipe, and of asteam-circulating pipe within and around such filtering material, allsubstantially as set forth.

2. In a filtering-tank for the purpose described, the combination of aperforated shell holding the filtering material and providing asurrounding open chamber between the walls and the perforated shell, ofa vertical pipe having strainer-cups within the filtering material andcommunicating with a dischargepipe, hot-water pipe, and steam-pipe, andof a waste-pipe to the bottom of the surrounding chamber, each having astop-valve, and

of a coiled steam-circulating pipe within and around the perforatedshell, all substantially as set forth.

3. In a filtering-tank for the purpose described, the combination of aperforated shell holding the filtering material and providing an openchamberaround such perforated shell, of a vertical pipe extended throughthe filterin g material and arranged to be rotated therein by means of awheel or crank on top, of strainer-cups to such vertical pipe foradmitting the filtered sirup into such pipe, of radial arms to suchvertical pipe for stirring the filtering material during a washout,of aWastepipe to the bottom of the surrounding chamber, and of adischarge-pipe, and a hot-water and a steam pipe, all communicating withthe lower end of the vertical pipe and each having a stop-valve, allsubstantially as set forth.

4. In a filtering-tank for the purpose described, the combination ofaperforated shell holding the filtering material and providing an openchamber around such perforated shell, of a coiled steam-circulating pipewithin and exterior of the perforated shell, of a vertical pipe extendedthrough the filtering material and arranged to be rotated therein bymeans of a wheel or crank on top, of strainer-cups to such verticalpipe-for admitting the filtered sirup into such pipe, of radial arms tosuch vertical pipe for stirring the filtering material during a washout,of a waste-pipe to the bottom of the surrounding chamber, and of adischarge-pipe, and a hot water and a steam pipe, all communicating withthe lower end of the vertical pipe and each having a stop-valve, allsubstantially as set forth.

In testimony whereof we aifix oursignaturcs in presence of twowitnesses.

OMAR ll. JEWEL]; \VILLIAM M. J EWVELL. \Vitnesses:

WILLIAM II. Lo'rz, OTTO LUEBKERT.

